Written by
Nadia Okafor Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codetESt / tE5t
ApplianceRange
Why nothing heats
Both tESt and tE5t are the Demo mode indicator. While it is active the oven and the electric cooktop do not heat, although gas burners can still light.
Turning Demo mode off
Locate the user manual for your exact range.
Find the section that covers Demo mode.
Carry out the steps there in the order given, since they differ between models.
If the manual steps do not bring heat back, phone (415) 969-6153 about Samsung range and oven repair in the Bay Area. Give the model number and the exact text on the display.
Model compatibility: Samsung reuses codes across series and model years, so tESt / tE5t may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
tESt and tE5t mean the range is in Demo mode, where the oven and electric cooktop will not heat.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Samsung appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
